I have taken GMAT in a test centre and I want to retake it but in online format. Since these are two consecutive exams in different format the requirement regarding 16-days-gap is not supposed to be applied. However, for some reason the system does not allow me to schedule the next appointment within the next 16 days even in Online delivered format.
I've contacted the support about this issue, the reply was: "The 16-day policy (waiting period) applies when you attempt two exams of the same format or if
you attempt a Test Center exam first and then book an Online Exam." - I haven't found information about this specific detail anywhere. Moreover, the majority of sources claim that you can take in-person GMAT and then online (or vise versa) with no waiting period between them.
Could you please help me to find out if there is actually such a rule which the help centre told be about?